public abstract class WeekDay1 { private WeekDay1(){} public final static WeekDay1 SUN = new WeekDay1() { //抽象类的方法不能实现,所以只能用内部子类实现 @Override public WeekDay1 nextDay() { // TODO Auto-generated method stub return MON; } }; public final static WeekDay1 MON = new WeekDay1() { @Override public WeekDay1 nextDay() { // TODO Auto-generated method stub return SUN; } }; public abstract WeekDay1 nextDay(); /*** * * @author Administrator 枚举 周一 到 周日 及带参数的构造方法 */ public enum WeekDay{ SUN(1),MON(),TUE(1,2,3,4),WED,THI,FRI,SAT; private WeekDay(){System.out.println("first");} private WeekDay(int day){System.out.println("second");} private WeekDay(int day,int ... args){ System.out.println("thired"); } } public static void main(String[] args) { System.out.println(WeekDay.SUN); } /*** * 枚举红绿黄灯 */ public enum TrafficLamp{ RED(30) { @Override public TrafficLamp nextLamp() { // TODO Auto-generated method stub return GREEN; } } , GREEN(40) { @Override public TrafficLamp nextLamp() { // TODO Auto-generated method stub return YELLOW; } }, YELLOW(5) { @Override public TrafficLamp nextLamp() { // TODO Auto-generated method stub return RED; } }; public abstract TrafficLamp nextLamp(); private int time; private TrafficLamp(){} private TrafficLamp(int time){ this.time = time; } } }
java中enum枚举的使用
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转载自suleeair.iteye.com/blog/2338076
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